If squirrels are looting your bird feeder and the poor birds aren't getting anything, this inexpensive DIY bird feeder can help keep the squirrels at bay.

The design is inexpensive and ingenious for its simplicity. The bird seed is held in a candy tin and the tin is connected to the supporting surface—wall, post, etc.—by a bolt that passes through the clear plastic dome. The dome isn't attached to anything and is free to rotate wildly, keeping grabby squirrels from getting inside the dome to get at the bird seed. Check out the tutorial for more pictures and a list of parts.